World based Vanguard operations already had difficulty modifiers. Launch method from worlds already exists. Launch menu at start already exists. Mod system is the only new element and that can be easily added. As stated in many a post, game exists without Portal. Portal just moves them into a new menu with preselected mods that rotate. It is copied code. The new drop system and light level control within Portal removed consistency for no reason. I would cheer the day this “feature” is removed.